Culvert.



H. I. STANDLEY.

GULVBRT.

APPLIOATIONEFILED umso, 1912.

I/I/l TNESSES HENRY I. STANDLEY, 0F HOPE, NORTH DAKOTA.

CULVERT.

Specification of Letters Patent.

.Patented May 7, 1912.

Application led January 30, 1912. Serial No. $741,313.l

more particularl)7 to that class of culvei'tsI known as sectional steel culverts.

An object of the invention is to provide a sectional vculvert of corrugated steel and means for get-her.

Other objects and advantages will be securely fastening the sections to-` hereinafter sct forth and pointed out in the g' specification and claim.

the straight smooth edge of the opposite section, said tongues being positioned alternately upon opposite sides of the smooth straiglitedge.' The sections are provided with interlocking lugs 4 near their edges, said lugs being pressed out of the sections, as clearly'shown in Figs. 1 and 2, the lugs carried b v the'tongues 3 and the opposite lugs positioned along the straight smooth edge of the other section being adapted for interlocking engagement with one another, the lugs of each section projectingr through the openings formed in the other section by pressing out the tongues of said section. By thus overlapping the edges of the lower and upper sections of each culvert pipe and locking the sections together, circular strong pipes are produced and it is impossible for either section to move independentlv of the other after the sections have been locked to- -gether.

In the accompanying drawings which are made a part of this application, Figure l is a perspective view o f a portion'of one of the sectional culvert pipes. Fig. 2 is a sectional View on the line 2 2 of Fig. 1, showing the j means for lockingthe sections together, Fig. 3 is a longitudinal sectional view showing the manner in which the ends .of the culvert j v the pipe to which it secured.' lt' desired.

pipes are connected, Fig. 4 is a 'sectional View showing a second forni of means for securing the sections'of pipe together, at the point 2 2, Fig. l. Fig. 5 is a fragmentaiwv side elevational view showing the overlapl ping edges of both pipe sections slotted to l produceinterlocking tongues. view similar to ig. 5,.showing another Fig. 6 is a.

manner of securingthe overlaj'iping edges j of tlie sections together, and, Fig. 7 is a vertical sectional view on'the line 7 7 of Fig. 6.

Referring more particularly to thc drawings in which similar reference numerals; designate corresponding parts throughout the several `Views, l represents the lower and upper sections of the culvert pipes, said sectionsbeing of substantially semi-circular form in cross section and having transverse corrugations.

In the preferred form I have shown cach g section-as having one straight smooth edge While its opposite edge is provided with1 suitable slots 2 at spaced distances to produce the tongues 3, the tongues 3 of each sections 1 as having a straight smooth edge Section being adapted for engagement over dependently'of ythe other.

The pipes ma \v be secured to one another h v insertiiig'tlie last cori-ligation of one pipe into the adjacent end of the next pipe. forcing the fastening wire 5 throughtl'ie perforated ears G carried h v each pipe and bending the wire against the interior surface of the corrugated pipes, thus preventing movement of either pipe indepeudenll)l of to produce thesliouldersS'for engagen'ieiit against one another while the offset portions 7 ot' cach section are engaged against the opposite section. inwardlyof its shoulder 8.

In thisjforin, the sections will be securely held together after being pressed into engagement with oncvanother.

In Fig. :'i I have shown the. edges of both sections 1 as being slotted. as shown att), to produce the tongues 10, lhe tongues of the. oppositie sections interlocking with one another. Tlie tongues of each section engage alternately against the inne1 and outersurfacesxof the opposite section and prevent longitudinal movement of either section in- In Figs. 6 and 7 I have shown one of the While the correspondingedge of the opposite section is provided with slots 11 to produce the tongues l2 for alternate engagement against the opposite sides of the rst section along its straight edge, certain of thevtongues l2 being secured in position 'by means of bolts 13 passed therethrough and through the first section near'its straight)l edge, with nuts let positioned upon the threaded ends of the bolts 13. l

It Will be seen that I have provided a sectional culvert pipe Which may be formed of thin corrugated material' of comparatively light weight to produce 'a culvert, each pipe of which is formed in sections locked together to produce a strongV and durable culvert, the pipes of Willich are also secured to one another. It will 'further be seen that I have provided'a novel locking means for the edges of th'e sections and for the ends of the pipes.

What' claim is A culvert pipe formed of longitudinal sec tions,'eacl1 section having a straight smooth edge, each section having a plurality of tongues for engagement With the straight smooth edge' of the opposite section, and

means carried by each section and adapted 

